Method for measuring catalyst abrasion resisting capability

A catalyst and anti-wear technology, which is applied in the direction of testing wear resistance, measuring devices, particle size analysis, etc., can solve the problems of complex structure and measurement operation of the measurement device, inability to completely distinguish between coarse and fine catalyst particles, and poor repeatability of measurement results. Achieve the effects of good discrimination ability, good repeatability, simple structure and measurement operation

Active Publication Date: 2015-08-26
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for measuring the anti-wear ability of catalysts, so as to solve the problems in the prior art that the coarse and fine catalyst particles cannot be completely distinguished, the repeat

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  • Method for measuring catalyst abrasion resisting capability
  • Method for measuring catalyst abrasion resisting capability

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Embodiment

[0022] Measure the anti-wear ability of two kinds of different petroleum processing FCC catalysts by the device and method of measuring catalyst anti-wear ability of the present invention, adopt figure 1 and figure 2 Catalyst wear device shown. Both catalysts are ZSM-5 molecular sieve catalysts, which are respectively referred to as catalyst A and catalyst B; two catalyst samples are taken from each catalyst, which are respectively referred to as catalyst sample A1, catalyst sample A2, catalyst sample B1, and catalyst sample B2. A total of 4 catalyst samples were placed in the inner cavity of each worn tube.

[0023] The motor is an adjustable speed motor with a rotating speed of 60 rpm and a rotation time of 8 hours (that is, the wear time of the four catalyst samples is 8 hours). The heights of the four wear tubes are all 50 cm, the diameters are all 5 cm, and the wall thicknesses are all 2 mm. The volume of each wear tube cavity is equal, and the volume of the loaded ca...

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Abstract

The invention discloses a method for measuring a catalyst abrasion resisting capability. The method is aimed to solve the problems that repeatability of measurement results is not good, number of catalyst samples abrased for each time is low, structures of measurement devices and measurement operations are complex and the like in the prior art. A catalyst abrasion device used in the method is equipped with a motor, connection rods (4) and more than three abrasion pipes (3). One end of each connection rod is fixed on the output shaft of the motor, and the other end of the connection rod is connected with one end of one abrasion pipe in a detachable manner. Through rotation of the abrasion pipes, a catalyst sample loaded into the cavity of each abrasion pipe is abrased, then the abrasion pipe is dismounted, and the abrased catalyst sample is poured out. Size distribution of the catalyst sample before and after abrasion is measured through a granularity analyzer. The abrasion resisting capability of the catalyst is determined according to the difference between volume percentages of fine catalyst particles in the catalyst sample before and after abrasion. The method is mainly used for measuring the abrasion resisting capability of petroleum processing fluidization catalytic cracking catalysts.

Description

technical field [0001] The invention relates to a method for measuring the anti-wear ability of a catalyst. Background technique [0002] Particle size distribution is the key control index of fluid cracking catalyst, which has a great influence on the fluidization performance and reaction performance of the catalyst. The reduction of fine catalyst particles (that is, fine catalyst powder) in the fluidized cracking catalyst will deteriorate the fluidization and circulation of the catalyst; too much fine catalyst particles will increase the workload of the cyclone separator and reduce the separation efficiency of the cyclone separator , causing catalyst running loss and increasing production cost. For all fluidized bed reactors, the catalyst will rub against the reactor wall and the processing raw materials during use, and friction will also occur between the catalysts, which will inevitably cause the wear of the catalyst particles and produce fine catalyst particles . If ...

Claims

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Application Information

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IPC IPC(8): G01N15/02G01N3/56
Inventor 白正伟李怿
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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